Car-door-operating mechanism.



W. '11. yosT. GAR DOOR OPERATING MEOHANISM.

APPLICATION FILED' SEPT. 30, 1910.

1,028,41 5, Patented June 4, 1912.

4 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH C0.,WASHINGTONl h. u.

W. H. -YOST. GAR DOOR OPERATING-MECHANISM.

Patented June 4; 1912.

4 SHEETS-SHEET 2.

APPLIOATIONIILED SEPT. 30 1910. 1,028,415.

COLUMBIA PLANoGR/Pu cn.. wASHlNuToN. n. C.

W. H. YOST. OAR DOOR OPERATING MEGHNISM.

APPLIOATION FILED SEPT. so, 1910.

Patented June 4, 1912.

4 SHEETS-SHEET 3.

COLUMBIA PLANOURAPH Co.. WASHINGTON. D. c,

W. H. YOST.

CAR DOOR OPERATING MBGHANISM.

APPLIOATION FILED SEPT. ao, 1910.

4 SHEETS-SHEET 4.

l l I Mitneooeo CDLUMBIA PLANDGRAPH CD..WASH|NGTON. n. c.

Patented June 4, 1912.

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WINFIEIJD HANCOCK YOST, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR TO NATIONAL DUMP CAR COMPANY, OF CHICAGO, ILLINOIS.

CAR-DOOR-OPERATING MECHANISM.

Specification of Letters Patent.

Patented J une a, 1912.

Application led September 30, 1910. Serial No. 584,677.

To all whom t may Gomera.'

Be it known that I, VVINFIELD HANCOCK Yosr, of the city of Montreal, Province of Quebec, Canada, have invented certain new and useful Improvements in Car-Door-Operating Mechanism; and I do hereby declare that the following is a full, clear, and exact description of the same. l

My invention relates particularly to door operating mechanism for dump cars and it has for its objectto facilitate the operating of such discharge doors, and to improve and simplify the operating mechanism.

The invention consists of the construction, combination, and particular arrangement of parts hereinafter described and pointed out in the claims. For full comprehension, however, of my invention reference must be had to the accompanying drawings forming a part of this specification, and in which similar reference characters indicate the same parts and wherein:

Figure l, is a transverse vertical sectional view of a car constructed according to my invention; Fig. 2 is a side elevation of one half thereof; Fig. 3 is a plan view of the underside of the car; and Fig. 4: is a similar view to 3 and drawn to a larger scale and illustrating the portion of the car disclosed in Fig. 2. Fig. 5 is a detail transverse vertical section taken on the line 5-5 Fig. 4 and illustrating particularly the retaining bar'for guiding and preventing displacement of the laterally movable shaft.

In the present embodiment of my invention the car illustrated has a fixed body the floor frame whereof comprises a pair of side sills end sills c, longitudinal intermediate sills cl, auxiliary sills e situated transversely between the sills (l, and side and auxiliary sill spacers e, a pair of platforms g/ y, one at each end and extending from the ends of the car to the adjacent upright of the hopper such platform being supported by the longitudinal sills.

The superstructure carried by this floor frame comprises inclined end hopper walls f and side walls consisting of vertical and inclined portions g and 7L respectively, the longitudinal intermediate sills CZ and auxiliary sills e having the lower ends of these hopper walls fastened thereto, thus forming a door frame presenting a discharge opening.

The doors, z' and j, closing the discharge opening are hinged as at 7c to the sills d and are provided on their underside with rails m presenting tread surfaces fm', and m2 the latter of which, when the doors are closed,

converge slightly toward supporting rails 0 suspended from the floor framing.

` The doors are operated by laterally movable shafts p p supported on the rails o, and acting in conjunction with such rails, the rails on the underside of the doors, and unitary gear operatively connected to both doors and comprising the 4following mechanism. A series of bearing brackets r and r suspended from the sills b and spacers e respectively, support an oscillatory shaft s having mounted rigidly thereon two pairs of crank arms t t and u u, respectively, the arms u of one pair being located at a short distance from the opposite ends of the shaft while the arms 25 of the other pair are located close to the ends. rlhese arms t t are connected to the shafts p by pitmen o extending past the ends of the doors i outside of the vertical planes of both doors, and the arms a are connected to the shaft j? by shorter pitmen w extending beneath the door z', pins o and w respectively connecting pitmen o to arms and pitmen w to arms u.

The shaft s is oscillated to operate the doors as will be presently set forth. The means for oscillating the shaft comprises a chain 2 passing over a chain pulley 3 rigid on t-he shaft, the chain being fastened to the pulley by bolts 4 to obviate any-chance of slip when the doors are being operated. Chain 2 is driven from an operating shaft 5 located above the floor frame and extending longitudinally of the car from a point near the inner end of the end platform g/ to a point slightly beyond the center line of the hopper, at which center line the chain 2 is located, the shaft 5 being supported in bearings 6 on the spacer members c. Y

Chain 2 is fastened at its ends to shaft 5 by bolts 7 and the chain is so arranged relatively to the shaft that as the doors move from open to closed position (or vice versa) one end of the chain unwinds from the shaft as the other end winds thereon. This arrangement of chain 2 is clearly illustrated in Fig. 4 of the drawings in which the doors are shown closed and one end of the chain is shown wound several times around the shaft, the number of turns being necessarily sufficient to allow the doors to be swung to open position, in which latter position the opposite end of the chain will be wound upon the shaft. This chain pulley 3 chain 2 and shaft 5 afford a simple and effective means for transmitting power to the shaft s and simultaneously multiplying such power to facilitate the closing of the doors.

In order to prevent the shaft p being lifted from the rail o by the pitman w during the first part of the closing operation, and also to prevent it jumping from place when it is precipitated to its seat as the doors are opened, a retaining bar n. is co-nnected at one end to the upright portion 0" of rail 0 and at its opposite end to the upright portion 02 of such rail, the bar a diverging upwardly from the rail 0.

Shaft 5 is operated by a lever 10 loosely mounted on the end thereof adjacent to the platform and adapted to be operated therefrom, this lever carrying` a pawl 11, which engages a ratchet wheel 12 rigid onthe shaft 5. To lock the shaft s against reverse movement when the doors are being closed a detent pawl 13 mounted on the bearing strap 11 and engaging a ratchet wheel 14: rigid on the shaft is provided.

The mechanism and particular arrangement thereof above described enables the doors to be operated from the car which is especially advantageous when the car is being unloaded from trestles or the like, while the operating parts are simple in construction and easily renewed in case of breakage.

Operation: To move the doors from open position (shown in dotted lines in Fig. l) to closed position (shown in full lines in the same ligure) lever 10 is operated rotating shaft 5 in the direction shown by the arrow 25. As shaft 5 is rotated the shaft s is caused to rotate in the saine direction by the chain 2, one end of the latter being wound upon shaft 5 and the other end unwound therefrom. The arms t and u are thereby swung to the position shown in full lines (Fig. 1) causing the shafts p and 2) to travel up the rails 0 and bear against the tread surfaces m m of the rails on the underside of the doors thus lifting the doo-rs to within close proximity of the door frame, and as the shafts continue upward they become wedged between the upper ends of the rails 0 and the converging portions m2 of the rails m thus tightly closing and locking the doors. To open the doors shaft 5 is ro tated in an opposite direction with a corresponding reverse rotation of shaft s, and reverse movement of the arms t and u, until the shafts p and p clear the portions m2 thus releasing such shafts and permitting them and the doors to fall to full open position. The bar a corrects any tendency of the shaft p to be displaced from its seat at the angle of the rail 0 and its upright o while the divergence of the bar from the rail 0 permits the entry of the shaft to position.

That I claim is as follows 1. In a car, the combination with door operating mechanism including an oscillatory shaft, of means for oscillating such shaft |comprising a chain "pulley rigid on said shaft, a chain looped intermediate its ends over such chain pulley, a second shaft to which the ends of the chain are secured, and means for rotating the second shaft.

2. A. dump car having an end platform, a

door frame presenting a discharge opening spaced longitudinally of the car from the said platform, a door hinged to the door frame to swing transversely of the car, a shaft extending longitudinally of the car at one side of the said opening and terminating at opposite ends at points adjacent the ends of the said opening, means operatively connecting the said shaft and door, a second shaft arranged longitudinally of the car above the first mentioned shaft and having one end thereof extending beyond the corresponding end of the first-mentioned shaft to a point adjacent the said platform, means for operating the last mentioned shaft, and

means operatively connecting the said shafts g tudinally of the car at one side of the said opening and terminating at opposite ends at points adjacent the ends of the said opening, means operatively connecting the shaft to each of the doors, a chain pulley upon such shaft, a second shaft arranged longitudinally of the car above the first mentioned shaft and having one end thereof extending beyond the corresponding end of the first mentioned shaft to a point adjacent the said platform, a chain passing over the said pulley and connected to the said second shaft, and an operating lever upon the end of the said second shaft adjacent the said platform.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

VINFIELD HANCOCK YOST. 1Witnesses STANLEY C. KING,

Gao. B. Donny.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

